PROCESS FOR PRODUCING OPTICALLY ACTIVE BETA-AMINO ALDEHYDE COMPOUND
申请人:Hayashi Yujiro
公开号:US20130211139A1
公开(公告)日:2013-08-15
The invention relates to a method of producing optically active β-aminoaldehyde compound (3) by reacting imine compound (1-1) or sulfone compound (1-2) with aldehyde compound (2) in the presence of an optically active pyrrolidine compound.
wherein each symbol is as defined in the specification.
PROCESS FOR PRODUCING OPTICALLY ACTIVE B-AMINO ALDEHYDE COMPOUND
申请人:Sumitomo Chemical Company, Limited
公开号:EP2631228A1
公开(公告)日:2013-08-28
The present invention provides a new method capable of producing an optically active β-aminoaldehyde compound from an imine compound.
The present invention relates to a method of producing optically active β-aminoaldehyde compound (3), which comprises a step of reacting imine compound (1-1) or sulfone compound (1-2) with aldehyde compound (2) in the presence of an optically active pyrrolidine compound.
R2-CH2CHO (2)
wherein each symbol is as defined in the specification.
Anti Mannich, try this! A direct asymmetric Mannich reaction catalyzed by a diarylprolinol silyl ether was developed to afford the anti‐Mannich product with excellent enantioselectivity. Imines derived from both aliphatic and aromatic aldehydes were successfully used to obtain the synthetically important β‐amino aldehydes (see scheme; Ts=tosyl). The reaction can also be performed in the presence of